cpupower: bench: parse.c: fix several resource leaks
The error handling in prepare_output has several issues with
resource leaks. Ensure that filename is free'd and the directory
stream DIR is closed before returning.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/tools/power/cpupower/bench/parse.c b/tools/power/cpupower/bench/parse.c
index f503fb5..2d09c92 100644
--- a/tools/power/cpupower/bench/parse.c
+++ b/tools/power/cpupower/bench/parse.c
@@ -81,14 +81,18 @@
len = strlen(dirname) + 30;
filename = malloc(sizeof(char) * len);
+ if (!filename) {
+ perror("malloc");
+ goto out_dir;
+ }
if (uname(&sysdata) == 0) {
len += strlen(sysdata.nodename) + strlen(sysdata.release);
filename = realloc(filename, sizeof(char) * len);
- if (filename == NULL) {
+ if (!filename) {
perror("realloc");
- return NULL;
+ goto out_dir;
}
snprintf(filename, len - 1, "%s/benchmark_%s_%s_%li.log",
@@ -104,12 +108,16 @@
if (output == NULL) {
perror("fopen");
fprintf(stderr, "error: unable to open logfile\n");
+ goto out;
}
fprintf(stdout, "Logfile: %s\n", filename);
- free(filename);
fprintf(output, "#round load sleep performance powersave percentage\n");
+out:
+ free(filename);
+out_dir:
+ closedir(dir);
return output;
}